Carla: Remember when we took Frasier on that snipe hunt?
She refers to the season 3 episode 'The Heart Is A Lonely Snipe Hunter' of Cheers.
L'Espalier, the restaurant Niles has reservations for, is a real place in Boston, as is one of the most expensive and well-regarded restaurants in the country. This was one of the few occasions that a real restaurant name was used.
Nitpick: Although it was impossible for this episode to feature the set of Cheers, for both legal and practical reasons, the explanation given of why the party wasn't being held at Cheers - that Sam was using it for a Red Sox reunion - leaves a lot to be desired. Sam or Cliff simply could have had their parties another night.
Norm explains why Vera won't be attending the party, and Frasier tells Niles that Vera is Norm's "much-storied" wife. It is highly appropriate that Niles be told about Vera, as Maris, Niles's first wife, who was never seen throughout the series, was based on Vera, who was never seen throughout the run of Cheers.
Interesting trivial bit of continuity concerning Cliff as he explains why his Mother is not at his party. Apparently she went to Bosnia, not Boston. Wonder if she said hello to Cliff's former mail-order bride, whom we find out about in The One Where Woody Shows Up as Woody mentions how she became homesick and returned to her native land, adding wisfully, "Man that Bosnia must be a beautiful place?"
Norm, Carla, Cliff, and Paul had all heard Frasier talk about his dad on "Cheers". Back then, Frasier said that his dad was a dead research scientist. The Cheers gang never mentions this. However, when Sam came back, he did mention it. Woody and Diane had never spoken of it in their returns either..
(Niles is not happy that Frasier revealed on the radio that he use to wet the bed)
Frasier : Oh, Niles, please, will you just let it go? I didn't mention your name.
Niles: Oh, no, you just said it was someone with whom you shared a bunk bed who is now a psychiatrist. I'd say that narrows the field down to...hmm, me!
Fraiser : But only to someone who knows that you're my brother. And who would that be?
Niles : My patients.
Martin: The guys at work.
Daphne : One of the flight attendants.
Niles: What? Oh, so that's why she looked at me that way when I told her I spilled my drink.
Carla: Fraiser, Frasier. Look at you. I forgot how big your head is.
Frasier : Carla, you haven't changed a bit.
Cliff: What's going down, Norm?
Norm: My blood alcohol level. (Picks up a beer) Suds, do your work.
Marty: Why don't you come to Seattle some time? I'll show you around, buy you a beer at McGinty's.
Norm: You mean that?
Marty: Sure, it's only six hours flying time.
Norm: I dunno, six hours... sitting in one place, not moving... it's just not me.
Cliff: Well, you were always there for me, Al.
Phil: (annoyed) I'm Phil. Al's been dead for fourteen years, you dumb son of a bitch!
(Cliff thanks someone for a spear gun, but says he won't need it in Boston.)
Carla: Give me that! Give me that!
Carla: I'd like to say that I'll miss you, but it sticks in my throat like your rotten deviled eggs! I hate your guts! The way you talk and talk and talk about nothing! The way you walk, your stupid white socks...
Carla: Back off, I'm toasting! The 20 years I have known you would have been less painful if I were covered with open sores and thrown into a pit with a bunch of diseased rats! But now, finally you're leaving! I know I am not as young as I used to be, but I can live again! I can live again! Finally, I can live! Anyway, God bless.
Cliff: The move is off!
Carla: No, no, no!
Carla: Frasier, we were so close and then you had to show up and ruin everything!
Niles: If I hear one more of that postman's crackpot theories my head will explode.
Frasier: Don't worry, Niles, no one takes him seriously.
Daphne: I never knew how many letters there were in the dolphin alphabet.
This was part of a special week on NBC when actors who appeared on past NBC shows make appearances on shows that are currently being produced by the producers of the show they were on as part of their 75th anniversary.
With their appearances in this episode Carla, Norm and Cliff are the only characters to appear in all three shows: "Cheers", "Frasier" and "The Tortellis".
With the exception of Bebe Neuwirth this is the final time any of the surviving cast members from "Cheers" reprises their roles on "Frasier".
Frasier: I still remember Sam throwing me a lavish party and dubbing me the Einstein of Cheers, against my modest protest that I was merely the Niels Bohr.
Niels Henrik David Bohr was a Danish physicist who made fundamental contributions to understanding atomic structure and quantum mechanics, for which he received the Nobel Prize in Physics in 1922. Bohr worked on The Manhattan Project and was a colleague of Einstein's.